Right Triangle (Pythagorean) |
Equilateral Triangle |
Rectangle |
Parallelogram |
General Quadrilateral (Bretschneider's Formula) |
Cyclic-Inscriptable Quadrilateral |
General Triangle h_{c }= length of altitude on side c, t_{c }= length of bisector of angle C, m_{c}^{ } = length of median to side c. (Law of Cosines) (Heron’s formula) |
Rhombus |
Trapezoid |
Regular Polygon |
Cyclic Quadrilateral (Brahmagupta’s formula) |